three mile island by his estimates. but as chu tells it, even the u.s. government doesn't really precisely know what's happening there. so keep that in mind as we show you some of these pictures that aired live today. what you're looking at there, it's either smoke, could be steam, it rose today from the plant after officials reported a second atomic reactor may have ruptu ruptured. later on, a japanese spokesman seemed to walk that statement back saying damage to the number 3 reactor appeared not to be that severe. so, going forward, we say who knows. but here's what we know. here's the thing. radiation levels then spiked above the plant which prompted the japanese to ground those helicopters trying to cool the plant. we talked about this yesterday, how those helicopters were going to drop some of the cooler water on the plants. but keep this in mind. they've now got concerns at all six reactors. you see them, 1 through 6, right in front of you, including the two off to the side, numbers 5 and 6. then you have 4, 5 and 6. they were all offline when the tsunami hit last friday, b